ASTROSAT CZTI

Data Quality Report

Orbit 04844

Creation date: 2024-06-27T14:47:49.413931
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G05_253T02_9000000614_04844cztM0_level2.evt modeM0/AS1G05_253T02_9000000614_04844cztM0_level2_quad_clean.evt
Size (bytes)469,825,92073,782,720
Size448.1 MB 70.4 MB
Events in quadrant A3,272,309445,721
Events in quadrant B3,274,660447,458
Events in quadrant C3,229,037450,228
Events in quadrant D4,000,887427,086

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01421522
B01400912
C01410110
D01648118

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66451081.625282%
B6646921.384291%
C6647721.083195%
D66442764.154124%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8581 6651 11 11 0.13% 0.17%
B 8581 6651 8 8 0.09% 0.12%
C 8581 6652 5 5 0.06% 0.08%
D 8581 6651 139 139 1.62% 2.09%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 149 128626 780.14 793 775 163.9
A 0 50 59687 359.48 793 775 163.9
A 0 226 19150 112.12 793 775 163.9
B 10 246 64415 415.75 797 780 153.1
B 15 54 29118 185.14 797 780 153.1
B 10 16 26612 168.77 797 780 153.1
C 12 4 132804 732.68 769 774 180.2
C 9 247 91279 502.24 769 774 180.2
C 13 61 6096 29.53 769 774 180.2
D 13 235 496714 2648.09 761 737 187.3
D 2 136 202718 1078.41 761 737 187.3
D 13 239 112954 599.14 761 737 187.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter